Subtract 1/42 from 27/24
1st number: 1 3/24, 2nd number: 1/42
27/24 - 1/42 is 185/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
27/24 = 27 × 7/24 × 7 = 189/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
1/42 = 1 × 4/42 × 4 = 4/168 - Subtract the two like fractions:
189/168 - 4/168 = 189 - 4/168 = 185/168 - In mixed form: 117/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/24-1/42 27/24-2/42 27/48-1/42 27/24-1/84 81/24-1/42 27/24-3/42 27/72-1/42 27/24-5/42 27/24-7/42